Scaffold



(No Model.)

1. SMITH.

SGAFFOLD.

Patented Apr. 5, 1892.

Fob nu //VVENTOH ATTOHNELS:

WITNESSES:

" UNITED STATES PATENT OFFiCE.

ISAIAH SMITH, OF NASHVILLE, TENNESSEE.

SCAFFOLD.

SPECIFICATION forming part Of Letters Patent No. 472,406, dated April 5,1892.

Application filed April 15, 1891. Serial No. 388,983. (No model.)

To all whom it may concern.-

Be it known that I, ISAIAH SMITH, a citizen of the United States,residing at Nashville, in the county of Davidson and State of-Tennessee,have invented certain new and useful Improvements in Scaffolds; and I dohereby declare the following to be afull, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention consists in a new and improved adjustable scaffold, whichis designed for general use, but is especially intended for the use ofpainters, paper-hangers, plasterers, 850. This scaffold is comparativelysimple and very strong and durable in its construction and can beadjusted in a few minutes to the desired height, and when not in use canbe readily separated and folded together so as to occupy but littlespace and be out of the way.

The invention will be hereinafter fully described and claimed.

Referring to the accompanying drawings, Figure 1 is a perspective viewof my adjustable folding scaffold. Fig. 2 illustrates in detail theinner racks and the adjustable upper ends of the inclined braces. Fig. 3illustrates in detail the construction of the collar F and itsconnection with the standard G and brace rod G.

The same letters of reference indicate corresponding parts in all thefigures.

Referring to the several parts by letter, A indicates the top orplatform of the scaffold upon which the painter or plasterer stands.This platform is supported at each end by the supporting-frames B B,consisting of the side pieces 0 O, which are connected together by therounds D. The side pieces preferably diverge downward at their lowerends, which are mounted onrollers B for convenience in moving thescaffold from place to place, as in a room where the Walls are beingpapered. The upper ends of the side pieces 0 are rounded at O, and theserounded ends are inserted loosely through bearing-straps E, secured tothe sides of thescaffold near each end of the same, as shown. The sidepieces 0 are square in cross-section, and upon them are secured thesquare stirrups F, the inner ends of which are formed with the aperturedlugs or jaws F. Between these apertured lugs are pivoted the lower endsof braces G, and in the upper ends of each pair of braces is secured atransverse rod H. Upon the side bars A of the platform A are secured atthe points near the center shown the racks I, having a series of curvedrecesses I in their upper sides, adapted to receive the transverse rodsH. It will now be seen that when the upper rounded ends of thesupporting-frames B have been fitted in the bearings E by engaging thetransverse rods H, which are secured in the upper ends of the braces Ginthe racks I, the height of the platform can be accurately regulated bymoving the said rods H to the desired recesses I of the racks I. Whenthe rods H are so adjusted or dropped into the recess 1, they will beheld therein by the weight of the board or platform A.

On the under side of the platform, near the ends of the same, aresecured the racks J, the lower sides of which are formed with a seriesof curved recesses J. When desired, the platform A can be lowered to thelevel of any of the rounds D of the supporting-frames by simply restingthe ends of the platform on the rounds at the desired height, the roundsengaging in the recesses of the end racks J, and in this case theremovable pivot-pins, which hold the lower ends of the braces, arewithdrawn and the lower ends of these braces are pivoted in the lowerstirrups F, to which they will then reach.

From the foregoing description, taken in connection with theaccompanying drawings,

the construction, method of adjustment, and

decided practical advantages of my new improved scaffold will be readilyunderstood.

It will be seen that my scaffold is comparatively simple and very strongand durable in its construction and that it can be readily adjusted todifferent heights.

When not in use, or when being carried or shipped from place to place,the platform and braces can be readily separated from thesupporting-frames B and theseveral parts folded together so as to occupybut a small space.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. The combination of the supportingframes B, having the rounded upperends 0, the platform having the racks I and the bearing-strapsE at itsends, the adjustable braces oted at their lower ends in the stirrups andG, hinged at their lower ends to the supporthaving" at their upper endsthe transverse jug-frames and having at their upper ends rods H, and theplatform A, having the bear- 15 the transverse rods H, substantially asset ing-straps E, the racks I, and the end racks J, forth. substantiallyas set forth.

2. The combination of the supporting- Intestimonywhereoflafiix mysignatureln frames consisting of the side pieces having presence of twowitnesses. the rollers B at their lower ends and formed with the roundedupper ends and the con- ISAIAH SMITH. heating-rounds D, the series ofstirrups F, secured on the side pieces of the supportingframes, the adjustahle braces removably piv- Vitnesses:

T. G. EWING, HUGH L. PRIoE.

